Preparation, Characterization and Gas Permeation Investigation of Resorcinol-Formaldehyde Polymer or Carbon Xerogels/Tubular Ceramic Composites

Authors

  • Liviu Cosmin Cotet “Babes-Bolyai” University, Faculty of Chemistry and Chemical Engineering, Arany Janos st., 11, Cluj-Napoca, RO-400028, Romania
  • Kelly Briceńo Rovira i Virgili University, Department of Chemical Engineering, Av. Paďssos Catalans, 26, Campus Sescelades, 43007, Tarragona, Spain
  • Carmen Ioana Fort “Babes-Bolyai” University, Faculty of Chemistry and Chemical Engineering, Arany Janos st., 11, Cluj-Napoca, RO-400028, Romania
  • Virginia Danciu “Babes-Bolyai” University, Faculty of Chemistry and Chemical Engineering, Arany Janos st., 11, Cluj-Napoca, RO-400028, Romania
  • Ricard Garcia-Valls Rovira i Virgili University, Department of Chemical Engineering, Av. Paďssos Catalans, 26, Campus Sescelades, 43007, Tarragona, Spain
  • Daniel Montané Catalonia Institute for Energy Research (IREC), Bioenergy and Biofuels Division, Av. Paďsos Catalans, 16, Campus Sescelades, 43007,Tarragona, Spain

Keywords:

Composite materials, xerogel, sol-gel process, porous ceramics, gas permeation

Abstract

New very stable composites prepared by deposition of resorcinol-formaldehyde polymer (RF-) or carbon (C-) xerogels into walls of commercial porous tubular ceramics (TiO2-ZrO2 and alphaAl2O3-gammaAl203) were obtained by a sol-gel process followed by a drying and a pyrolytic (only for C-xerogel/ceramic composites) step. They were characterized by nitrogen adsorption-desorption, SEM and XRD, and tested for gas (H2, CH4, CO2 and CO) separation applications. Additional morpho-structural information about the open-interconnected ultramicropore structure of composites was found by gas permeation investigation. Interesting results for H2 permeance was obtained especially for RF-polymer/ceramic composites respecting Knudsen diffusion mechanism of gas permeance: H2 > CH4 > CO > CO2. The coexistence of Knudsen and surface diffusion mechanisms were confirmed.

 

Author Biography

Carmen Ioana Fort, “Babes-Bolyai” University, Faculty of Chemistry and Chemical Engineering, Arany Janos st., 11, Cluj-Napoca, RO-400028, Romania

 

 

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Published

28.10.2013

Issue

Vol. 60 No. 2 (2013)

Section

Materials science

License

Except where otherwise noted, articles in this journal are published under the Creative Commons Attribution 4.0 International License